Forgetful InkConsumable 6
Source Pathfinder #169: Kindled Magic
Price 32 gp
Weight light
Activate 
Interact
Used to write secret messages, a single dose of forgetful ink is enough to pen a page of text, often with flourishes extending to the page's edges. Anyone handling the page is exposed to the poison. This includes casual reading, unless the reader specifically takes precautions not to physically touch it. Unlike other poisons, forgetful ink retains its potency for one year, regardless of the number of victims exposed.
Saving Throw DC 20 fortitude (secret)
Onset 1 minute
Stage 1 The reader forgets the contents of the writing, recalling it as blank or as inconsequential text.
Traits
Something of uncommon rarity requires special training or comes from a particular culture or part of the world. Some character choices give access to uncommon options, and the GM can choose to allow access for anyone. Less is known about uncommon creatures than common creatures. They typically can't be summoned. The DC of Recall Knowledge checks related to these creature is increased by 2.
AlchemicalAlchemical items are powered by reactions of alchemical reagents. Alchemical items aren't magical and don't radiate a magical aura.
ConsumableAn item with this trait can be used only once. Unless stated otherwise, it's destroyed after activation. Consumable items include alchemical items and magical consumables such as scrolls and talismans. When a character creates consumable items, they can make them in batches of four.
ContactThis poison is delivered by contact with the skin.
PoisonAn effect with this trait delivers a poison or deals poison damage. An item with this trait is poisonous and might cause an affliction.